This function is needed for the KVMI_EVENT_DESCRIPTOR event.
Signed-off-by: Adalbert Lazăr <alazar@xxxxxxxxxxxxxxx>
---
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/kvm/svm.c | 6 ++++++
arch/x86/kvm/vmx/capabilities.h | 7 ++++++-
arch/x86/kvm/vmx/vmx.c | 1 +
4 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index bf36ed2c5e9b..81a59b03b0c5 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1105,6 +1105,7 @@ struct kvm_x86_ops {
void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
+ bool (*desc_ctrl_supported)(void);
u64 (*get_dr6)(struct kvm_vcpu *vcpu);
void (*set_dr6)(struct kvm_vcpu *vcpu, unsigned long value);
void (*sync_dirty_debug_regs)(struct kvm_vcpu *vcpu);
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index de409d73ce0c..f9185f0b0c2b 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -6109,6 +6109,11 @@ static bool svm_xsaves_supported(void)
return boot_cpu_has(X86_FEATURE_XSAVES);
}
+static bool svm_desc_ctrl_supported(void)
+{
+ return true;
+}
+
static bool svm_umip_emulated(void)
{
return false;
@@ -7475,6 +7480,7 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = {
.set_idt = svm_set_idt,
.get_gdt = svm_get_gdt,
.set_gdt = svm_set_gdt,
+ .desc_ctrl_supported = svm_desc_ctrl_supported,
.get_dr6 = svm_get_dr6,
.set_dr6 = svm_set_dr6,
.set_dr7 = svm_set_dr7,
diff --git a/arch/x86/kvm/vmx/capabilities.h b/arch/x86/kvm/vmx/capabilities.h
index f486e2606247..22301cc979cb 100644
--- a/arch/x86/kvm/vmx/capabilities.h
+++ b/arch/x86/kvm/vmx/capabilities.h
@@ -140,12 +140,17 @@ static inline bool cpu_has_vmx_ept(void)
SECONDARY_EXEC_ENABLE_EPT;
}
-static inline bool vmx_umip_emulated(void)
+static inline bool vmx_desc_ctrl_supported(void)
{
return vmcs_config.cpu_based_2nd_exec_ctrl &
SECONDARY_EXEC_DESC;
}
+static inline bool vmx_umip_emulated(void)
+{
+ return vmx_desc_ctrl_supported();
+}
+
static inline bool vmx_pku_supported(void)
{
return boot_cpu_has(X86_FEATURE_PKU);
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index ba47f5f2ea91..657c9ac0070b 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7919,6 +7919,7 @@ static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
.set_idt = vmx_set_idt,
.get_gdt = vmx_get_gdt,
.set_gdt = vmx_set_gdt,
+ .desc_ctrl_supported = vmx_desc_ctrl_supported,
.get_dr6 = vmx_get_dr6,
.set_dr6 = vmx_set_dr6,
.set_dr7 = vmx_set_dr7,
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